
import  { Component } from 'react'
import {
    createIncrementAction,
    createDecrenmentAction,
    createIncrementAsyncAction
} from '../../redux/count_action'
// 引入connect 用于链接UI组件与redux 

import { connect } from 'react-redux'

 class Count extends Component {

    state = {}
    increment = () => {
        // 获取当前的输入
        const { value } = this.selectNumber
        this.props.add(value * 1)


    }
    decrement = () => {
        // 当前求和的值 
        // const { count } = this.state
        const { value } = this.selectNumber
        this.props.jian(value * 1)

    }
    // 奇数加 
    incrementIfOdd = () => {

        const { value } = this.selectNumber
        const count = this.props.count
        if (count % 2 === 1) {
            this.props.add(value * 1)
        }

    }
    // 异步加 
    incrementAsync = () => {
        const { value } = this.selectNumber
        this.props.addAsync(value * 1)


    }

    render() {
        // console.log('Ui组件接受到的props是',this.props)
        return (
            <div>
                <h1>当前的求和为:{this.props.count}</h1>
                <select ref={c => this.selectNumber = c} >
                    <option value="1">1</option>
                    <option value="2">2</option>
                    <option value="3">3</option>
                </select>
                &nbsp;  &nbsp;
                <button onClick={this.increment}>+</button>
                &nbsp; &nbsp;
                <button onClick={this.decrement}>-</button>
                &nbsp;  &nbsp;
                <button onClick={this.incrementIfOdd}>当前求和为奇数在加</button>
                &nbsp;  &nbsp;
                <button onClick={this.incrementAsync}>异步加</button>
            </div>
        )
    }
}

// 创建容器组件  并且默认 暴露出来容器的组件 
export default connect(
    // mapStateToProps 的简写
    state=>({ count: state }), 
    // mapDisPatchToProps 的简写  不用自己写action , react_redux 是可以自己做分发
    {
        add:createIncrementAction,
        jian:createDecrenmentAction,
        addAsync:createIncrementAsyncAction
    }
)(Count)

// 暴露容器组件 
// export default CountContianer